The typical repair cost for the timing chain failure comes in at around $2,320, with the most common solution being to replace the timing chain and the tensioner at around 114,000 miles. The top engine concerns have the users stating that there was timing chain failure, the engine whining noise, the engine stalling and shutting down while driving, and the service engine soon light coming on. The transmission failure costs around $3,890 to repair, with the most common solution being replacing the radiator and the transmission. Users state that with the transmission system there are radiator leaks and transmission failure, the car jerking while driving, the vehicle shuddering while accelerating, the transmission failing, the car not being able to go into low gear, and sludge the transmission fluid. The main categories of concern regarding the 2005 Nissan Xterra involve the transmission and the engine for the users, and the drivetrain and the fuel system for the NHTSA concerns. The repair costs are generally around $3,500, with the same defect existing in the Pathfinder and the Frontier. The 2005 Nissan Xterra was potentially the worst model year, with the 2005-2007 Xterra having a widespread defect with the transmission, causing the transmission failure at an average of around 90,000 miles. The Nissan Xterra also has transmission failure issues, with the corrosion occurring and causing the transmission to slip and overheat. In addition, the 2005 Nissan Xterra had various expensive problems, with the most common issue being the radiator leaking fluid into the transmission system, and the problem occurring once the car has reached between 100,000-130,000 miles on the odometer. In addition, the check engine light can turn on due to a faulty fuel sensor and the pink coolant in the radiator can cause the transmission problems. The highest complaint regarding the Nissan Xterra focuses on the radiator leaking and causing transmission failure, with the problem occurring at around 106,000 miles in the 2005 Nissan Xterra. This involves the coolant outlet on the lower intake manifold potentially leaking and the fuel injectors possibly failing, causing driveability concerns. The second highest problem includes the coolant leaking into the transmission, occurring at around 112,000 miles in the 2007 Nissan Xterra. There are frequent complaints of the car not being able to start and the engine stalling during use, along with noise coming from the front of the engine. The third highest complaint of the Nissan Xterra involves the sudden loss of power on the freeway, occurring at around 28,000 miles in the 2011 Nissan Xterra.